gaussGrad
I have a question for gaussGrad.
00106 forAll(mesh.boundary()[patchi], facei) 00107 { 00108 igGrad[pFaceCells[facei]] += pSf[facei]*pssf[facei]; 00109 } 00110 } 00111 00112 igGrad /= mesh.V(); In the 112 line, why igGrad is divided by mesh.V(). In the case of FVM, I understand that volume integration of grad(p) is sum of surface value of p. So, I can not understand the meaning of 112 line. Please comment or advice for me. Thanks in advance. |
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Hi,
according to the Gauss' divergence theorem, http://www.cfd-online.com/Forums/att...1&d=1314240973, the gradient at node p is calculated by integrate phi at the closed surface around the node. |
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